In the bigger picture, "down" could be defined as being below the plane of the solar system, which is known as the ecliptic.

If you've ever wondered why we are here, then you can thank Jupiter for part of the answer. A new study from Rice University suggests that if it weren't for the gas giant, the Earth would have ...

Grab-and-go missions to asteroids have provided some of the most scientifically valuable samples since the Apollo ...

The biggest planet in the Solar System has gone rogue. And now it’s heading straight toward Earth. You have 30 days till this ...

Short-lived radioisotopes such as aluminum-26 influenced early solar system heat, water retention and the formation of Earth-like rocky planets, according to meteorite analyses and models.

Researchers uncover how Mars affects Earth’s orbit, offering new insight into the planetary forces behind ice ages.

Bad news, earthlings. Computer simulations of the solar system’s future reveal a new risk facing us all: The gravitational tug of a passing star could either cause another planet to smack into Earth ...